[Gluster-users] Glusterfs : unable to copy/move files to the replicated volume

[Gopu Krishnan]

Hi all,

I am having issue to copy/move files to my replicated volume residing
inside the aws volume. I will explain my current setup. I have created two
instances in aws and attached a 50GB volume to each of them. I have mounted
those volumes at the mount points /gluster_brick1 and /gluster_brick2
respectively. I have created another directory /gluster_brick1/data/ and
/gluster_brick2/data/ as two bricks for the glusterfs replications. I have
followed the below link for replication setup that was working nicely for
me.

https://gopukrish.wordpress.com/glusterfs/

My volume name is datavol and is mounted to each of the servers in the
location /home/mytestlo/public_html.


gluster replication is working fine as expected when i create files. But
when I copy or  move files to the datavolume, i get error : Remote I/O
error.


[root at mytestlocal1 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/xvda1            9.9G  7.1G  2.4G  76% /
none                  1.8G     0  1.8G   0% /dev/shm
/dev/xvdb              50G  7.1G   40G  16% /gluster_brick1
mytestlocal1.com:/datavol
                       50G  7.1G   40G  16% /home/mytestlo/public_html

[root at mytestlocal1 ~]# cd /home/mytestlo/public_html
[root at mytestlocal1 public_html]# mv /root/phpmyadmin/
/home/mytestlo/public_html/
*mv: cannot create directory `/home/mytestlo/public_html/phpmyadmin':
Remote I/O error*

Only log I was able to find out was :

nfs.log
[2015-05-28 13:29:26.713278] I [MSGID: 109036]
[dht-common.c:6689:dht_log_new_layout_for_dir_selfheal] 0-datavol-dht:
Setting layout of /phpmyadmin with [Subvol_name: datavol-replicate-0, Err:
-1 , Start: 0 , Stop: 4294967295 , Hash: 1 ],

Following are my gluster details.

[root at mytestlocal1 public_html]# cat /etc/redhat-release
CentOS release 6.6 (Final)


[root at mytestlocal1 public_html]# glusterfs -V
glusterfs 3.7.0 built on May 20 2015 13:30:40
Repository revision: git://git.gluster.com/glusterfs.git
Copyright (c) 2006-2013 Red Hat, Inc. <http://www.redhat.com/>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
It is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3
or later), or the GNU General Public License, version 2 (GPLv2),
in all cases as published by the Free Software Foundation.


[root at mytestlocal1 ~]# gluster volume info

Volume Name: datavol
Type: Replicate
Volume ID: 1c77f0cf-c3b7-49a3-bcb4-e6fe950c0b6a
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: mytestlocal1.com:/gluster_brick1/data
Brick2: mytestlocal2.com:/gluster_brick2/data
Options Reconfigured:
performance.readdir-ahead: on
auth.allow: IP1,IP2






[root at mytestlocal1 public_html]# gluster volume status
Status of volume: datavol
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick mytestlocal1.com:/gluster_brick1/data 49152     0          Y
27422
Brick mytestlocal2.com:/gluster_brick2/data 49152     0          Y
26015
NFS Server on localhost                     2049      0          Y
27407
Self-heal Daemon on localhost               N/A       N/A        Y
27417
NFS Server on mytestlocal2.com              2049      0          Y
26004
Self-heal Daemon on mytestlocal2.com        N/A       N/A        Y
26014

Task Status of Volume datavol
------------------------------------------------------------------------------
There are no active volume tasks


[root at mytestlocal1 public_html]# gluster peer status
Number of Peers: 1

Hostname: mytestlocal2.com
Uuid: 2a6a1341-9e8c-4c3a-980c-d0592e4aeeca
State: Peer in Cluster (Connected)



[root at mytestlocal1 public_html]# gluster volume heal datavol info
split-brain
Brick mytestlocal1.com:/gluster_brick1/data/
Number of entries in split-brain: 0

Brick mytestlocal2.com:/gluster_brick2/data/
Number of entries in split-brain: 0


I am not sure whether aws volume is causing the error. Please help !

Thanks,
Gopu
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